Could I be preg?

So I been trackin my period thru glow and another trackin app and according to that one im 5 days late but according to glow it should start tomorrow the 11th of march… (mind you my periods have been very irregular) but the weird thing is I been gettin cramps like I'm gettin my period I been goin to the bathroom alot and the outside of my breast are kinda sore. Now I been in this position before I dont want to take a test now and be dissapointed like I have before so I was thinkig I would wait till this weekend and if my period don't come I will take a test.. I guess I jus need some advice on wat I should do. So confused